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9966 [12]
3 years ago
14

Which two earth layers are separated by the moho boundary?

Biology
1 answer:
Viefleur [7K]3 years ago
8 0
The crust and mantle.
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Harlamova29_29 [7]
1. DNA is a double helix, while RNA is a single helix.
RNA is able to bond with another RNA to form DNA.
The answer to this question is:
<span>C. Molecule 1 in DNA which is a double helix.

2. DNA and RNA store data/information/instructions for the organism.
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7 0
3 years ago
In each generation, the wings of experimental fruit flies were clipped short for fifty generations. The fifty-first generation w
Rufina [12.5K]

N an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on

a. inheritance of natural variations

b. inheritance of acquired characteristics

c. natural selection

d. survival of the fittest

Inheritance of acquired characteristics. Thus, option "B" is correct.

<h3 /><h3>What is inheritance of acquired characteristics?</h3>

For fifty generations wings of fruit flies were clipped. Hence they acquired this trait in their lifetime and not genetically. If acquired characteristics were capable of passing on to next generation, 50 generations would have been enough to inculcate this clipped wing trait in fruit flies. Despite it, the fifty-first generation did not have clipped wings.

Hence evolution can not occur without genetic variation. A character simply acquired in a lifetime does not create a difference in germ cells and hence is not enough to be passed on to next generation or cause evolution

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3 0
1 year ago
Which molecule brings amino acids to the ribosomes during protein synthesis?
Andreas93 [3]
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The steps of meiosis
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4 0
3 years ago
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A farmer is breeding Andalusian chickens. He notices that when he mates a black chicken with a white chicken, the offspring are
borishaifa [10]
D- neither attribute is taking dominance so it is incomplete
8 0
3 years ago
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